Jumping prevention device and sliding door

Abstract

To provide a bouncing prevention device of a simple structure and a sliding door.SOLUTION: A bouncing prevention device installed in a sliding door that runs on a floor surface of a sliding door frame comprises: a rail slider that slides along a top rail; a case body fixed on an upper end of the sliding door that opens / closes along the top rail; a connection part which is a member mounted on the case body and stored so as to be movable in a vertical direction relative to the rail slider, having a connection part-side engaging part provided on a face in a horizontal direction perpendicular to an opening / closing direction; a changeover switch mounted in a freely rotatable manner while being stored in the rail slider, which rotates by contact with a changeover tool of the top rail when the rail slider is moved, and is capable of being changed between an unlock position or a lock position; and an engaging tool mounted on the rail slider so as to be movable to a non-engagement position or an engagement position according to a rotation of the changeover switch, having an engaging tool-side engaging part that engages with the connection part-side engaging part when the same is moved to the engaging position.SELECTED DRAWING: Figure 5

Description

[Technical field]

[0001] The present invention relates to a jump-up suppression device and a sliding door. [Background technology]

[0002] Currently, non-suspended sliding doors (hereinafter, sometimes simply referred to as "sliding doors") that run on a lower rail installed at the bottom of the door frame are attached to the door frame with a small amount of play in the vertical direction (gravity direction). For example, when a user closes the sliding door, a sliding door shock absorber (a closer or a brake mechanism) that slows down the action so that the door does not close suddenly is attached to both the left and right ends of the upper end of the sliding door.

[0003] In such a sliding door, when the sliding door is closed, the sliding door shock absorber applies a braking force only to the upper end of the sliding door, and the lower end of the sliding door is not subjected to a braking force and instead is subjected to an inertial force, which may cause the sliding door to tilt and bounce up. Also, while the sliding door is traveling, the upper end receives a shock absorber force and a braking force in the direction opposite to the traveling direction by the sliding door shock absorber, which may cause the sliding door to bounce up due to the moment generated.

[0004] Such bouncing of the sliding door can cause noise due to the sliding door colliding with the upper frame and the lower roller to come off, and can also have a negative effect on the durability of the sliding door shock absorber. Furthermore, it can also hinder the sliding door from being smoothly pulled in by the sliding door shock absorber. For these reasons, there is a demand for preventing or suppressing the bouncing of the sliding door. An upper guide device for the sliding door (see, for example, Patent Document 1) has been proposed as a device for suppressing the bouncing of the sliding door.

[0005] In the upper guide device for the sliding door in Patent Document 1, the upper end of the built-in damper member with a built-in spring abuts against the underside of the runner body. Therefore, even if the sliding door tries to bounce up due to vertical play between the runner body and the sliding door, the damping action of the built-in damper member in the upper guide device can suppress a sudden change in the relative distance between the sliding door fixed body and the runner body, so that the sliding door can be effectively prevented from bouncing up. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] JP 2017-193944 A Summary of the Invention [Problem to be solved by the invention]

[0007] However, in the upper guide device for the sliding door described in Patent Document 1, a built-in damper member must be incorporated into the upper guide device, which complicates the structure. In addition, the built-in damper member is a relatively expensive part, which raises concerns about increased costs.

[0008] In addition, in the upper guide device for the sliding door described in Patent Document 1, when hanging the sliding door on the upper rail, the sliding door fixing body must be adjusted to the height of the mounting part of the sliding door against the resistance of the built-in damper member, and the operability during hanging was not good. Furthermore, the built-in damper member is always in a state of being loaded against the runner body due to its damping action, which creates running resistance when the sliding door runs.

[0009] The present invention has been made in consideration of the above points, and has an object to provide a jump-up suppression device and a sliding door that are simpler in configuration and easier to use than conventional devices. [Means for solving the problem]

[0010] In order to solve such problems, the present invention provides a jump-up suppression device that is attached to a sliding door with a lower frame load that runs along the opening and closing direction on a lower rail provided on the lower frame of a sliding door frame or on the floor surface of the lower frame, and includes a rail slider that slides along an upper rail, a case body that is fixed to the upper end of the sliding door that opens and closes along the upper rail, a connecting part that is a member attached to the case body and is accommodated in a storage space provided in the rail slider so as to be movable in the vertical direction and has a connecting part side engagement part provided on a horizontal surface perpendicular to the opening and closing direction, a change-over switch that is attached rotatably while accommodated in the rail slider and rotates by contact with the switching device of the upper rail when the rail slider moves and can be switched to an unlocked position or a locked position, and a locking device that is attached to the rail slider in a state in which it can slide to an unlocked position or an engaged position by sliding in accordance with the rotation of the change-over switch, and has a locking device side engagement part that engages with the connecting part side engagement part when it slides to the engaged position.

[0011] In the present invention, the connecting portion is preferably a plate-shaped member.

[0012] In the present invention, the changeover switch has an M-shape in a planar view and is composed of a first blade portion having a mountain-shaped configuration and a second blade portion having a mountain-shaped configuration, and it is preferable that a first apex of the first blade portion or a second apex of the second blade portion comes into contact with the changeover device.

[0013] In the present invention, it is preferable that the locking device is U-shaped in a plan view, and the locking device side engagement portions are provided on the inner surfaces of the opposing arms, and the connecting portion is provided with the connecting portion side engagement portions capable of engaging with the locking device side engagement portions on one horizontal surface perpendicular to the opening / closing direction and on the other horizontal surface opposite to the one surface.

[0014] In the present invention, it is preferable that either the first blade portion or the second blade portion of the changeover switch protrudes upward from the rail slider and comes into contact with the switching tool when the rail slider travels.

[0015] In the present invention, the switching device is preferably attached to a position on the upper rail where the buffer force or braking force of the sliding door buffer device acts.

[0016] In addition, the present invention provides a sliding door having a jump-up suppression device attached to a lower rail provided on the lower frame of a sliding door frame or a sliding door with a lower frame load that runs along the opening and closing direction on the floor surface of the lower frame, the jump-up suppression device comprising: a rail slider that slides along an upper rail; a case body that is fixed to the upper end of the sliding door that opens and closes along the upper rail; a connecting part that is a member attached to the case body and is accommodated in a storage space provided in the rail slider so as to be movable in the vertical direction and has a connecting part side engagement part provided on a horizontal surface perpendicular to the opening and closing direction; a change-over switch that is attached rotatably while accommodated in the rail slider and rotates by contact with the switching device of the upper rail when the rail slider moves and can be switched to an unlocked position or a locked position; and a locking device that is attached to the rail slider in a state in which it can move to an unlocked position or an engaged position by sliding in accordance with the rotation of the change-over switch, and has a locking device side engagement part that engages with the connecting part side engagement part when it slides to the engaged position. Effect of the Invention

[0017] According to the present invention, it is possible to realize a jump-up suppression device and a sliding door that have a simpler configuration and are easier to use than conventional devices. [Brief description of the drawings]

[0018] [Figure 1] 1 is a plan view showing a state in which a rail slider equipped with a jump-up suppression device in the present embodiment is assembled to a sliding door shock absorber. [Diagram 2] 1 is a schematic perspective view showing a state in which a rail slider equipped with a jump-up suppression device in the present embodiment is assembled to an upper rail. [Diagram 3]1 is a side view showing a state in which a rail slider equipped with a jump-up suppression device in the present embodiment is assembled to an upper rail. [Figure 4] 1 is a schematic perspective view showing the configuration of a rail slider and a case body in which a jump-up suppression device in the present embodiment is incorporated; [Diagram 5] 2 is an exploded perspective view showing the configuration of a rail slider, a connecting plate, a locking device, a changeover switch, and a case body that constitute the jump-up suppression device in the present embodiment. FIG. [Figure 6] 3 is a schematic perspective view showing a configuration of a connecting plate of the jump-up suppression device in the present embodiment. FIG. [Figure 7] 2 is a schematic perspective view showing the configuration of a fastener of the jump-up suppression device in the present embodiment. FIG. [Figure 8] 11 is a perspective view showing an assembled state of the connecting plate and the locking device when the changeover switch of the jump-up suppression device in the present embodiment is in the unlocked position. FIG. [Figure 9] 4A and 4B are a side view and a cross-sectional view showing the positional relationship between a changeover switch and a locking device when the changeover switch of the jump-up suppression device in the present embodiment is in an unlocked position. [Figure 10] 10A and 10B are a cross-sectional view and an enlarged cross-sectional view showing the state of the locking device and the connecting plate when the rail slider is cut along line BB in FIG. 9 when the changeover switch of the jump-up suppression device in the present embodiment is in the unlocked position. [Figure 11] 11 is a perspective view showing an assembled state of the connecting plate and the locking device when the changeover switch of the jump-up suppression device in the present embodiment is in a locked position. FIG. [Figure 12] 4A and 4B are a side view and a cross-sectional view of the jump-up suppression device according to the present embodiment when the change-over switch is in a lock position. [Figure 13] 13A and 13B are a cross-sectional view and an enlarged cross-sectional view showing the state of the locking device and the connecting plate when the rail slider is cut along line BB in FIG. 12 when the changeover switch of the jump-up suppression device in this embodiment is in the locked position. [Figure 14]1A is a cross-sectional view showing an engagement state between a protrusion of a rail slider and a concave-convex portion of a connecting plate when a changeover switch of a jump-up suppression device in the present embodiment is in a locked position, and an enlarged view of the engagement portion. [Figure 15] 10 is a schematic diagram showing a change in the relative positions of the changeover switch, the locking device, and the connecting plate when the changeover switch transitions from an unlocked position to a locked position in the embodiment. FIG. [Figure 16] 11 is a schematic diagram showing a transition from when the changeover switch is in a locked position due to an irregular cause to when the changeover switch returns to a normal locked position in the present embodiment; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] 1. Overview of the embodiment First, a typical embodiment of the invention disclosed in this application will be outlined. In the following description, as an example, reference numerals in the drawings corresponding to components of the invention are given in parentheses.

[0020] [1] In a representative embodiment of the present invention, a jump-up suppression device (100) is attached to a sliding door (D) with a lower frame load that runs along a lower rail provided on the lower frame of a sliding door frame or on the floor surface of the lower frame in the opening and closing direction, and includes a rail slider (10) that slides along an upper rail (L1), a case body (30) that is fixed to the upper end of the sliding door (D) that opens and closes along the upper rail (L1), and a member that is attached to the case body (30), which is accommodated in an accommodation space (13s) provided in the rail slider (10) so as to be movable in the vertical direction, and is set on a surface in a horizontal direction (arrow ef direction) perpendicular to the opening and closing direction (arrow ab direction). a changeover switch (60) that is attached so as to be freely rotatable while housed in the rail slider (10) and that rotates upon contact with a switching device (70) of the upper rail (L1) when the rail slider (10) moves, and that can be switched between an unlocked position and a locked position; and a locking device (20) that is attached to the rail slider (10) in a state in which it can move to an unlocked position or an engaged position by sliding in response to the rotation of the changeover switch (60), and that has a locking device side engaging portion (27) that engages with the connection part side engaging portion (54) when the locking device slides to the engaged position.

[0021] [2] In the above-mentioned jump-up suppression device (100), the connecting portion (50) is a plate-shaped member.

[0022] [3] In the above-mentioned jump-up suppression device (100), the changeover switch (60) has an M-shape in a planar view and is composed of a first blade portion (62) having a mountain-shaped configuration and a second blade portion (63) also having a mountain-shaped configuration, and the first apex (62t) of the first blade portion (62) or the second apex (63t) of the second blade portion (63) comes into contact with the changeover device (70).

[0023] [4] In the above-mentioned jump-up suppression device (100), the fastener (20) is U-shaped in a plan view, and the fastener side engagement portion (27) is provided on the inner surfaces of the opposing arms (22), and the connecting portion (50) is provided with the connecting portion side engagement portion (54) capable of engaging with the fastener side engagement portion (27) on one surface in the horizontal direction (arrow ef direction) perpendicular to the opening / closing direction (arrow ab direction) and on the other surface opposite to the one surface.

[0024] [5] In the above-mentioned jump-up suppression device (100), either the first blade portion (62) or the second blade portion (63) of the changeover switch (60) protrudes upward from the rail slider (10) and comes into contact with the changeover device (70) when the rail slider (10) is traveling.

[0025] [6] In the above-mentioned jump-up suppression device (100), the switching device (70) is attached to a position on the upper rail (L1) where the buffer force or braking force from the sliding door buffer device (CL) acts.

[0026] [7] In a representative embodiment of the present invention, a sliding door (D) has a jump-up suppression device (100) attached to a lower-frame-loaded sliding door (D) that runs along a lower rail provided on the lower frame of a sliding door frame or on the floor surface of the lower frame in the opening and closing direction, and the jump-up suppression device (100) is a rail slider (10) that slides along an upper rail (L1), a case body (30) that is fixed to the upper end of the sliding door (D) that opens and closes along the upper rail (L1), and a member that is attached to the case body (30), and is accommodated in an accommodation space (13s) provided in the rail slider (10) so as to be movable in the vertical direction, and is movable in a horizontal direction perpendicular to the opening and closing direction (the direction of the arrow ab). The rail slider (10) includes a connecting portion (50) having a connecting portion side engagement portion (54) provided on a surface (in the direction of arrow ef), a changeover switch (60) that is attached so as to be freely rotatable while being accommodated in the rail slider (10) and that rotates upon contact with a switching device (70) of the upper rail (L1) when the rail slider (10) moves, and that can be switched between an unlocked position and a locked position, and a locking device (20) that is attached to the rail slider (10) in a state in which it can slide to an unlocked position or an engaged position in response to the rotation of the changeover switch (60), and that has a locking device side engagement portion (27) that engages with the connecting portion side engagement portion (54) when the locking device slides to the engaged position.

[0027] 2. Specific examples of embodiments Hereinafter, the configuration of a sliding door to which a rail slider equipped with a jump-up suppression device according to an embodiment of the present invention is attached will be described in detail with reference to Figs.

[0028] Here, Fig. 1 is a plan view showing a state in which a rail slider equipped with a jump-up suppression device in this embodiment is assembled to a sliding door shock absorber. Fig. 2 is a schematic perspective view showing a state in which a rail slider equipped with a jump-up suppression device in this embodiment is assembled to an upper rail. Fig. 3 is a side view showing a state in which a rail slider equipped with a jump-up suppression device in this embodiment is assembled to an upper rail.

[0029] Fig. 4 is a schematic perspective view showing the configuration of a rail slider and a case body in which a jump-up suppression device in this embodiment is incorporated. Fig. 5 is an exploded perspective view showing the configuration of a rail slider, a connecting plate, a locking device, a changeover switch, and a case body that constitute the jump-up suppression device in this embodiment. Fig. 6 is a schematic perspective view showing the configuration of a connecting plate of the jump-up suppression device in this embodiment. Fig. 7 is a schematic perspective view showing the configuration of a locking device of the jump-up suppression device in this embodiment.

[0030] Fig. 8 is a perspective view showing an assembled state of the connecting plate and the locking tool when the changeover switch of the jump-up suppression device in this embodiment is in the unlocked position. Fig. 9 is a side view and a cross-sectional view showing the positional relationship between the changeover switch and the locking tool when the changeover switch of the jump-up suppression device in this embodiment is in the unlocked position.

[0031] Fig. 10 is a cross-sectional view and an enlarged cross-sectional view showing the state of the locking tool and the connecting plate when the rail slider is cut along the line BB in Fig. 9 when the changeover switch of the jump-up suppression device in this embodiment is in the unlocked position. Fig. 11 is a perspective view showing the assembled state of the connecting plate and the locking tool when the changeover switch of the jump-up suppression device in this embodiment is in the locked position.

[0032] Fig. 12 is a side view and a cross-sectional view of the jump-up suppression device in this embodiment when the changeover switch is in the lock position. Fig. 13 is a cross-sectional view and an enlarged cross-sectional view showing the state of the locking tool and the connecting plate when the rail slider is cut along line BB in Fig. 12 when the changeover switch of the jump-up suppression device in this embodiment is in the lock position. Fig. 14 is a cross-sectional view and an enlarged view of the engaging portion showing the engagement state between the protrusion of the rail slider and the uneven portion of the connecting plate when the changeover switch of the jump-up suppression device in this embodiment is in the lock position.

[0033] As shown in FIG. 1, this embodiment is directed to a bottom-frame-loaded sliding door D that slides along the opening and closing direction on a bottom rail provided on the bottom frame of a sliding door frame (not shown) fixed to the periphery of an opening in a structure such as a building or on the floor surface of the bottom frame.

[0034] As shown in FIG. 1, for convenience of explanation, the opening and closing direction of the sliding door D may be referred to as the left-right direction. That is, the direction of the arrow a for closing the sliding door D is referred to as the closing direction or left direction, and the direction of the arrow b for opening the sliding door D is referred to as the opening direction or right direction. Also, the vertical direction of gravity (direction of the arrow cd) perpendicular to the opening and closing direction of the sliding door D (direction of the arrow ab) may be referred to as the up-down direction. That is, the direction of the arrow c in which the sliding door D jumps up is referred to as the upward direction, and the direction of the arrow d in which the sliding door D is pressed against the lower rail is referred to as the downward direction. Furthermore, the horizontal depth direction (direction of the arrow ef) perpendicular to the opening and closing direction of the sliding door D (direction of the arrow ab) may be referred to as the front-back direction or horizontal direction. That is, the direction of the arrow e when the sliding door D is pushed from the front side of the paper to the back side is referred to as the back side, and the direction of the arrow f when the sliding door D is pulled from the back side of the paper to the front side is referred to as the front side. However, the opening / closing direction (left-right direction), the up-down direction, and the front-rear direction (horizontal direction) are used for the convenience of explanation, and may be defined as different directions depending on the usage situation of the sliding door D.

[0035] As shown in FIG. 1, the sliding door D is made of a plate-like member having a roughly rectangular shape when viewed from above, and mainly comprises a pair of case bodies 30 having a roughly rectangular parallelepiped shape overall that are fixed in a state accommodated in both left and right ends of the upper end of the sliding door D, a pair of rail sliders 10 respectively attached above the pair of case bodies 30, and a sliding door shock absorber CL attached to the rail sliders 10 arranged in the closing direction (direction of arrow a).

[0036] In this case, the sliding door shock absorber CL is attached only to the rail slider 10 provided in the closing direction (arrow a direction). However, this is not limited to this, and the sliding door shock absorber CL may be attached to the rail slider 10 provided in the opening direction (arrow b direction), or the sliding door shock absorber CL may be attached to both the closing direction (arrow a direction) and the opening direction (arrow b direction). Note that, for convenience, the sliding door shock absorber CL is omitted from FIG. 2.

[0037] 〔sliding door〕 The sliding door D is a plate-like member made of various materials and has a rectangular shape in a plan view, and both ends (corners) on the upper end side thereof are formed with accommodating recesses kc for accommodating and fixing the case body 30. The sliding door D is integrally fixed in a state in which the case body 30 is accommodated in each of the accommodating recesses kc.

[0038] As shown in Figs. 2 and 3, the rail slider 10 is attached to an upper rail L1 provided on the upper frame of the sliding door frame, so that the entire sliding door D can slide in the opening and closing direction (the direction of the arrow ab).

[0039] The upper rail L1 is fixed to the upper frame of the sliding door frame and is formed in a generally U-shape that opens downward. The upper rail L1 includes a top wall portion L1a extending in the longitudinal direction, a pair of side wall portions L1b extending downward from both short-side end edges of the top wall portion L1a, and a pair of flange portions L1c that extend toward each other in the front-rear direction (the direction of the arrow ef) from the downward tip edges of the pair of side wall portions L1b and are disposed apart in an opposing state.

[0040] The pair of side walls L1b and the pair of flanges L1c extend in the longitudinal direction, similar to the top wall L1a. The upper rail L1 holds the rail slider 10 slidably in the opening / closing direction (the direction of the arrow ab) along the upper rail L1 with almost the entire rail slider 10 accommodated in the accommodation space inside the U-shape.

[0041] In addition, in the U-shaped inner storage space of the upper rail L1, a switch 70 for switching the changeover switch 60 described later between the unlocked position and the locked position is attached to the top wall portion L1a at the end in the closing direction (direction of arrow a).

[0042] Next, the case body 30, the rail slider 10, etc. will be described. Here, the case body 30 and the rail slider 10 provided in the closing direction (the direction of the arrow a) will be described with reference to FIGS.

[0043] [Case body] The case body 30 is a member having an overall roughly rectangular parallelepiped shape, and includes a case main body portion 31 that fixes the connecting plate 50 described later while accommodating the connecting plate 50, and a front panel portion 33 that is integrally formed with the case main body portion 31 in the closing direction (direction of arrow a).

[0044] The case main body 31 of the case body 30 has an accommodation space 31s (Figure 5) inside which the connecting plate main body 51 of the connecting plate 50 can be accommodated, and is a box-shaped member having an approximately rectangular parallelepiped shape with an opening upward in the accommodation space 31s (in the direction of arrow c).

[0045] The opening facing upward (in the direction of arrow c) into the storage space 31s of the case main body 31 is provided to fix the upper portion of the connecting plate main body 51 of the connecting plate 50 to the case main body 31 in a state where it protrudes from the storage space 31s.

[0046] Furthermore, the case body 31 has a through hole 31h penetrating in the depth direction (arrow ef direction) so as to communicate with the accommodation space 31s. Therefore, when a fixing pin (not shown) is inserted into the through hole 51h of the connecting plate body 51 via the through hole 31h of the case body 31 in a state in which the connecting plate 50 is accommodated in the accommodation space 31s of the case body 31, the connecting plate 50 is fixed to the case body 30 in a state in which it is restricted in the up-down direction (arrow cd direction) and the opening / closing direction (arrow ab direction).

[0047] The front panel 33 of the case body 30 is provided integrally with the case body 31 on the side in the closing direction (the direction of the arrow a) of the case body 31. A cylindrical operator 33n is attached to the upper end of the front panel 33. In the case body 30, the position of the connecting plate body 51 of the connecting plate 50 can be adjusted in the front-rear direction (the direction of the arrow ef) in response to the rotation of the operator 33n of the front panel 33.

[0048] [Connection plate] Next, the connecting plate 50 as a connecting part will be described. As shown in Fig. 5 and Fig. 6, the connecting plate 50 has a connecting plate main body 51 made of a thin plate-like member having a rectangular shape in a plan view that is long in the up-down direction (the direction of the arrow cd), and a stopper plate 52 that is substantially H-shaped in a front view and is attached integrally to the connecting plate main body 51 in the closing direction (the direction of the arrow a).

[0049] The connecting plate main body 51 has a through hole 51h into which a fixing pin (not shown) is inserted for fixing the connecting plate main body 51 to the case body 30. The connecting plate 50 is fixed to the case body 30 by the fixing pin at a position where the through hole 31h of the case main body 31 corresponds to the through hole 51h of the connecting plate main body 51. Therefore, the connecting plate 50 is fixed in a state where an upper portion thereof protrudes from the case body 30.

[0050] The connecting plate main body 51 has a through hole (hereinafter referred to as the ``vertical direction restriction hole'') 51r formed in a vertically elongated oval shape along the vertical direction (arrow cd direction) approximately in the center of its upper side (arrow c direction).

[0051] The vertical direction restricting hole 51r of the connecting plate main body 51 receives the protrusion 11r of the first slider portion 11 and the protrusion 12r of the second slider portion 12 of the rail slider 10 described later, restricting the vertical movement range of the rail slider 10 relative to the connecting plate 50 (in the direction of the arrow cd).

[0052] The connecting plate body 51 of the connecting plate 50 has a recess 51m cut into a substantially semicircular or inverse elliptical shape from the end face on the upper side (in the direction of the arrow c). The recess 51m of the connecting plate body 51 is a recessed portion for escaping the rail slider 10 from contact with a cylindrical shaft holding portion 61 of the changeover switch 60 (described later) when the rail slider 10 moves downward (in the direction of the arrow d) relative to the connecting plate 50.

[0053] Connecting plate side engagement portions 54 are provided on both sides (i.e., on both sides in the horizontal direction (arrow ef direction) perpendicular to the opening / closing direction (arrow ab direction)) of end portion 53, which is a rectangular column-shaped portion adjacent to recess 51m of connecting plate main body portion 51, i.e., on the opening direction (arrow b direction) side of recess 51m.

[0054] The connecting plate side engagement portion 54 (Figure 6) is formed on both sides of the end portion 53 in the front-to-rear direction (the direction of arrow ef), and is a portion in which multiple convex portions 54c and concave portions 54d extending parallel to the opening / closing direction (the direction of arrow ab) are arranged alternately and at equal intervals in the up-down direction (the direction of arrow cd).

[0055] In this case, the number of convex portions 54c and concave portions 54d of the connecting plate side engaging portion 54 is made greater than the number of convex portions 27c and concave portions 27d of two locking device side engaging portions 27 provided on the locking device 20 (FIG. 7) described later. However, this is not limited thereto, and the number of convex portions 54c and concave portions 54d of the connecting plate side engaging portion 54 may be the same as the number of convex portions 27c and concave portions 27d of the locking device side engaging portion 27, or the number of either one may be greater or less.

[0056] In this case, the convex portion 54c and the concave portion 54d of the connecting plate side engaging portion 54 specifically have a sawtooth cross-sectional shape, but are not limited to this and may have a rectangular cross-sectional unevenness or various other shapes. However, since the connecting plate side engaging portion 54 and the locking tool side engaging portion 27 need to engage with each other, it is preferable that their shapes are the same.

[0057] End portion 53 of connecting plate body portion 51 has two inclined portions 53c whose tips become gradually thinner toward the opening direction (arrow b direction) in plan view from above (arrow c direction).

[0058] The narrower angle (hereinafter referred to as the "included angle") α of the inclined portion 53c with respect to the imaginary line 53L along the opening / closing direction (the direction of the arrow ab) of the end portion 53 is set to, for example, 20 degrees to 30 degrees. Therefore, the convex portion 54c of the connecting plate side engaging portion 54 is also formed so that the peak of the convex portion gradually becomes smaller toward the opening direction (the direction of the arrow b).

[0059] A groove 52m that is cut out in a generally U-shape and concave shape is formed on the upper side (in the direction of the arrow c) of the stopper plate 52 of the connecting plate 50. The groove 52m of the stopper plate 52 can be engaged with a protrusion 13x (FIG. 4) formed on the slider body 13 of the rail slider 10 (described later), and restricts the rail slider 10 from moving downward (in the direction of the arrow d) relative to the connecting plate 50 beyond the groove 52m.

[0060] An uneven portion 55 (FIG. 6) having fine unevenness is formed on the end face in the closing direction (arrow a direction) of the connecting plate main body 51. This uneven portion 55 is a portion that can engage with a protrusion 13y (FIG. 14) consisting of a protrusion portion 11y (FIG. 5) that protrudes slightly toward the accommodation space 13s from the lower end of the first slider portion 11 and the second slider portion 12 that form the slider main body 13 in the closing direction (arrow a direction) and the protrusion portion 12y.

[0061] [Rail slider] As shown in FIGS. 4 and 5, the rail slider 10 is a member having a generally rectangular parallelepiped shape, and is disposed at a position substantially opposite the case body 30 in the up-down direction (the direction of the arrow cd).

[0062] The rail slider 10 has a slider main body 13 (FIG. 4) formed from a resin material that moves along an upper rail L1 (FIG. 2) while being accommodated in the upper rail L1, and a rectangular column-shaped mounting portion 14 that protrudes in the opening direction (arrow b direction) from the end face of the slider main body 13 in the opening direction (arrow b direction).

[0063] The slider main body 13 is constructed by integrally attaching a first slider portion 11 and a second slider portion 12 which are vertically divided into two parts along the opening / closing direction (arrow ab direction) at a midpoint in the fore-and-aft direction (arrow ef direction).

[0064] The first slider portion 11 (FIG. 3) has a notch 11k cut into a rectangular shape at the bottom when viewed from the front in the closing direction (the direction of the arrow a), and a protruding portion 11p protruding in a rectangular parallelepiped shape is formed in the notch 11k. As a result, a groove 11m exists between the first slider portion 11 and the protruding portion 11p formed in the notch 11k.

[0065] Similarly, the second slider portion 12 (FIG. 3) has a step portion 12k that is cut out in a rectangular shape on the lower side when viewed from the front in the closing direction (the direction of the arrow a), and a protruding portion 12p that protrudes in a rectangular parallelepiped shape is formed on the step portion 12k. As a result, a groove 12m exists between the second slider portion 12 and the protruding portion 12p formed on the step portion 12k.

[0066] Therefore, the slider main body 13 of the rail slider 10 can slide in the opening / closing direction (direction of arrow ab) with a pair of flange portions L1c of the upper rail L1 inserted into the groove 11m between the first slider portion 11 and the protrusion 11p, and into the groove 12m between the second slider portion 12 and the protrusion 12p.

[0067] 2 to 5, the first slider portion 11 and the second slider portion 12 have inflated portions 11q and 12q that partially inflate in a mountain shape along the longitudinal direction, which is the opening / closing direction (the direction of the arrow ab), on the outer surfaces of the sidewall portions 11e and 12e. The surfaces of the portions of the inflated portions 11q and 12q that correspond to the peaks are flat (hereinafter, these will be referred to as "peak surfaces").

[0068] 3, the distance between the top surfaces of the expansion portions 11q, 12q and the inner peripheral surface of the side wall portion L1b of the upper rail L1 is narrowed in the slider main body 13. Therefore, when the slider main body 13 slides in the opening / closing direction (the direction of the arrow ab) along the flange portion L1c of the upper rail L1, rattling in the depth direction (the direction of the arrow ef) is suppressed by the presence of the expansion portions 11q, 12q.

[0069] At the same time, the presence of the expansion parts 11q and 12q prevents the slider main body 13 from opening in the depth direction (arrow ef direction) due to loosening of the assembled state between the first slider part 11 and the second slider part 12. Note that, since only the mountain-shaped top surfaces of the expansion parts 11q and 12q contact the inner peripheral surface of the side wall part L1b of the upper rail L1, the sliding resistance during sliding is suppressed to a minimum.

[0070] As shown in FIG. 5, the first slider portion 11 is provided with a step portion 11z on its inner portion, and is formed with a substantially U-shaped recess 11u in plan view seen from the front side (in the direction of the arrow f).

[0071] Similarly, the second slider portion 12 is also provided with a step portion 12z (not shown) on its inner portion, and a substantially U-shaped recess 12u is formed in plan view from the rear side (direction of arrow e).

[0072] The first slider part 11 has circular fitting holes 11a and 11b formed at its upper end in the closing direction (arrow a direction) and the opening direction (arrow b direction). The first slider part 11 also has a rectangular fitting hole 11c formed at its lower end in the closing direction (arrow a direction), and a prismatic fitting protrusion 11d formed at its lower end in the opening direction (arrow b direction).

[0073] The second slider portion 12 has cylindrical fitting protrusions 12a, 12b formed at positions facing the fitting holes 11a, 11b of the first slider portion 11. The second slider portion 12 also has a prismatic fitting protrusion 12c formed at a position facing the rectangular fitting hole 11c of the first slider portion 11, and a rectangular fitting hole (not shown) formed at a position facing the fitting protrusion 11d of the first slider portion 11.

[0074] That is, the slider main body 13 is formed by integrating the mating holes 11a, 11b, 11c and mating protrusion 11d of the first slider portion 11 with the mating protrusions 12a, 12b, mating protrusion 12c and mating holes of the second slider portion 12.

[0075] At this time, the slider body 13 has an accommodation space 13s (FIG. 4) that can accommodate the locking device 20 and the changeover switch 60, formed by the recess 11u of the first slider portion 11 and the recess 12u of the second slider portion 12. The locking device 20 accommodated in the accommodation space 13s of the slider body 13 is formed in a substantially U-shape in a plan view seen from above (in the direction of the arrow c), and the upper portion of the connecting plate 50 is disposed in a state where it is inserted into the U-shape of the locking device 20.

[0076] When the first slider portion 11 and the second slider portion 12 of the slider main body 13 are integrated, a protrusion 13x (Figure 4) is formed that protrudes slightly in the opening direction (arrow b direction) along the opening / closing direction (arrow ab direction) from the upper and central part of the wall portion on the closing direction (arrow a direction) side that forms the storage space 13s.

[0077] This protrusion 13x is formed by integrating a protrusion portion 11x (FIG. 5) of the first slider portion 11 and a protrusion portion 12x (FIG. 5) of the second slider portion 12. The protrusion 13x can be engaged with a groove portion 52m of a stopper plate 52 of a connecting plate 50 (described later), and the downward movement (in the direction of arrow d) of the slider main body portion 13 of the rail slider 10 relative to the connecting plate 50 is restricted.

[0078] Furthermore, protruding portions 11y and 12y that protrude slightly from the lower ends in the closing direction (arrow a direction) toward the accommodation space 13s are formed in the first slider portion 11 and the second slider portion 12 that form the slider body portion 13. Here, the protruding portion 12y is not shown in FIG.

[0079] When the first slider portion 11 and the second slider portion 12 are integrated to form the accommodation space 13s, a protrusion 13y (FIG. 14) consisting of the protruding portions 11y and 12y is formed. The protrusion 13y of the slider body 13 is a portion that can engage with the uneven portion 55 of the connecting plate 50 that has entered the accommodation space 13s.

[0080] At the center upper side (direction of arrow c) of the inner portions of the side wall portions 11e and 12e of the first slider portion 11 and the second slider portion 12, through holes 11h and 12h are formed.

[0081] A pivot shaft 66 of the change-over switch 60 is inserted into the through holes 11h, 12h in the first slider portion 11 and the second slider portion 12, and the change-over switch 60 is pivotally supported about the through holes 11h, 12h to an unlocked position in the closed direction (arrow a direction) (Figures 8 and 10) or to a locked position in the open direction (arrow b direction) (Figure 11).

[0082] Rectangular parallelepiped projections 11v, 12v are provided in the vicinity of the through holes 11h, 12h at approximately the centers of the side walls 11e, 12e of the first slider portion 11 and the second slider portion 12. The projections 11v, 12v function as stoppers that restrict the rotation range of the changeover switch 60. Note that the projection 12v is not shown in FIG.

[0083] Elliptical cylindrical projections 11r, 12r are formed on the ends in the closing direction (arrow a direction) of the side surfaces constituting the step portions 11z, 12z of the first slider portion 11 and the second slider portion 12. Note that the projection 12r is not shown in FIG.

[0084] When the first slider portion 11 and the second slider portion 12 are assembled and integrated, the protrusions 11r and 12r enter the vertical direction restriction holes 51r formed in the connecting plate 50. As a result, the movement of the slider body 13 in the vertical direction (the direction of the arrow cd) is restricted within the range of the vertical direction restriction holes 51r of the connecting plate 50.

[0085] At the ends in the opening direction (direction of arrow b) of the side surfaces forming the step portions 11z, 12z of the first slider portion 11 and the second slider portion 12, elliptical cylindrical holes (hereinafter referred to as "left-right direction restriction holes") 11t, 12t that are elongated in the opening / closing direction (direction of arrow ab) are formed.

[0086] The left-right direction restricting holes 11t, 12t in the first slider portion 11 and the second slider portion 12 are portions into which an elliptical cylindrical stopper 29 provided on the locking device 20 described later is inserted, and restricts the range of movement of the locking device 20 in the opening and closing direction (arrow ab direction).

[0087] At a position slightly toward the closing direction (arrow a direction) from approximately the center of the steps 11z, 12z of the first slider portion 11 and the second slider portion 12, a standing wall portion 11w is provided above the projection 11r.

[0088] This vertical wall portion 11w, like the left-right direction control holes 11t, 12t, functions as a stopper that controls the range of movement of the locking device 20 in the opening and closing direction (arrow ab direction), and is erected at a predetermined height upward from the step portions 11z, 12z (arrow c direction).

[0089] The mounting portion 14 provided at the end of the slider body 13 in the opening direction (arrow b direction) is a member for connecting to the sliding door shock absorber CL. The mounting portion 14 has two mounting bodies 14a provided at a predetermined distance apart in the vertical direction (arrow cd direction) and a female screw body 14b interposed between the two mounting bodies 14a.

[0090] The mounting body 14a has a through hole formed therethrough along the vertical direction (the direction of the arrow cd). The female screw portion 14b has a female screw formed on the inner peripheral surface of the through hole that penetrates along the vertical direction (the direction of the arrow cd).

[0091] Therefore, when the first slider portion 11 and the second slider portion 12 are assembled, the through holes of the two mounting bodies 14a and the through hole in which the female thread is formed of the female thread body 14b are opposed to each other and are integrally formed. The slider body portion 13 of the rail slider 10 is attached to the sliding door shock absorber CL by the screws 41 via the mounting portion 14 (FIG. 1).

[0092] [Latching device] As shown in FIG. 7, the locking device 20 is a member formed in a substantially U-shape, and slides in the accommodation space 13s in the slider body 13 of the rail slider 10 in the opening / closing direction (the direction of the arrows ab).

[0093] The locking device 20 has a rectangular parallelepiped-shaped locking main body 21 extending in the front-to-rear direction (direction of arrow ef), two arms 22 which are convex in side view and extend from both ends of the locking main body 21 in the closing direction (direction of arrow a), and legs 28 which are rectangular parallelepiped-shaped and extend downward (in the direction of arrow d) from the lower surface (direction of arrow d) of the locking main body 21.

[0094] Arms 22 of locking device 20 have protrusions 23 with a trapezoidal cross section that protrude from the tip to the rear (in the direction of arrow e) and to the front (in the direction of arrow f). Protrusions 23 of arms 22 are held by legs 65 (FIGS. 5 and 8) of changeover switch 60, which will be described later, and changeover switch 60 is attached to locking device 20 via protrusions 23.

[0095] A stopper 24 having a rectangular parallelepiped shape protruding toward the rear side (in the direction of the arrow e) and toward the front side (in the direction of the arrow f) is formed in the approximate center of the arm 22, similar to the projection 23. This stopper 24 extends in the opening / closing direction (in the direction of the arrow ab) and serves to regulate the rotation range of the changeover switch 60.

[0096] The protrusion 23 and stopper 24 of the arm portion 22 are set to a protruding length such that they do not come into contact with the side wall portion 11e of the first slider portion 11 and the side wall portion 12e of the second slider portion 12 in the case main body portion 31 when accommodated in the accommodation space 31s of the case main body portion 31.

[0097] On the inner surface of the arm portion 22 opposite to the outer surface on which the stopper 24 is formed, there is formed a locking device side engaging portion 27 which engages with two connecting plate side engaging portions 54 formed on both surfaces of the end portion 53 of the connecting plate 50 described above. Similar to the connecting plate side engaging portion 54, the locking device side engaging portion 27 has a plurality of parallel convex portions 27c and concave portions 27d which extend along the opening / closing direction (the direction of the arrow ab) and are arranged alternately and at equal intervals in the vertical direction (the direction of the arrow cd).

[0098] In this case, the convex portion 27c and the concave portion 27d of the locking device side engagement portion 27 are formed on a part of the mutually opposing inner surfaces of the two arm portions 22, but this is not limited thereto, and the convex portion 27c and the concave portion 27d may be formed on the entire inner surface.

[0099] The leg 28 of the locking device 20 is a rectangular parallelepiped-shaped member that protrudes downward from the lower surface of the arm 22 (in the direction of arrow d), and has an elliptical cylindrical stopper 29 that protrudes toward the rear side (in the direction of arrow e) and the front side (in the direction of arrow f).

[0100] These two stoppers 29 are parts that fit into the left-right direction restriction hole 11t (Figure 5) provided in the step portion 11z of the first slider part 11 and the left-right direction restriction hole 12t (Figure 9) provided in the step portion 12z of the second slider part 12, and restrict the sliding range of the locking device 20 in the opening and closing direction (arrow ab direction).

[0101] [Selector switch] As shown in Figure 5, the changeover switch 60 has a cylindrical shaft holding portion 61, a first blade portion 62 and a second blade portion 63 each having a mountain shape extending on both sides in the opening and closing direction (the direction of arrows ab) from the shaft holding portion 61 as the center, and a leg portion 65 consisting of two legs connected to the first blade portion 62 and the second blade portion 63.

[0102] This changeover switch 60 has an axis holding portion 61, a first blade portion 62, a second blade portion 63, and a leg portion 65 all formed integrally, and the first blade portion 62, the second blade portion 63, and the axis holding portion 61 form an overall M-shape when viewed in a plane.

[0103] The shaft holding portion 61 of the changeover switch 60 is a cylindrical member extending in the front-rear direction (the direction of the arrow ef), and a rotation shaft 66 for rotating the changeover switch 60 is formed integrally therewithin. The rotation shaft 66 has both ends protruding, and the two ends are rotatably inserted into the through hole 11h of the first slider portion 11 and the through hole 12h of the second slider portion 12.

[0104] The first and second blades 62 and 63 of the changeover switch 60 are integrally formed with both end portions on the rear side (arrow e direction) and front side (arrow f direction) of the shaft holding part 61, and both have the same shape. That is, the changeover switch 60 has two combinations of the first and second blades 62 and 63 on the rear side (arrow e direction) and front side (arrow f direction).

[0105] The first blade 62 has a mountain shape in a plan view, and has an apex portion (hereinafter, referred to as a "first apex") 62t. The second blade 63 also has a mountain shape in a plan view, and has a second apex 63t.

[0106] The first blade portion 62 and the second blade portion 63 have angles and mountain heights forming the first apex 62t and the second apex 63t set so that when the change-over switch 60 is rotatably accommodated in the accommodation space 13s of the slider main body portion 13 of the rail slider 10, either the first apex 62t or the second apex 63t always protrudes upward from the slider main body portion 13.

[0107] Specifically, as shown in Figures 8 to 10, when the change-over switch 60 is rotated counterclockwise, i.e., in the unlocked position, the first apex 62t of the first blade portion 62 is contained within the slider main body 13 and does not protrude, but the second apex 63t of the second blade portion 63 protrudes upward from the slider main body 13.

[0108] When the changeover switch 60 is in the unlocked position, the locking device side engaging portion 27 of the locking device 20 and the connecting plate side engaging portion 54 of the connecting plate 50 do not face each other in the opening / closing direction (the direction of the arrow ab), and are in the unlocked position, as shown in Fig. 10. In other words, the sliding door D is in a state where it can be lifted up.

[0109] Conversely, as shown in Figures 11 to 13, when the change-over switch 60 is rotated clockwise in Figure 12, i.e., in the locked position, the second apex 63t of the second blade portion 63 is contained in the slider main body 13 and does not protrude, but the first apex 62t of the first blade portion 62 protrudes upward from the slider main body 13.

[0110] When the changeover switch 60 is in the lock position in this way, the locking device side engaging portion 27 of the locking device 20 and the connecting plate side engaging portion 54 of the connecting plate 50 face each other in the opening / closing direction (the direction of the arrow ab), and the locking device side engaging portion 27 and the connecting plate side engaging portion 54 are in an engaged position where they are engaged with each other, as shown in Fig. 13. In other words, the sliding door D is in a state where it cannot be lifted up.

[0111] 14, when the changeover switch 60 is in the locked position, as described above, the locking tool side engaging portion 27 and the connecting plate side engaging portion 54 are engaged with each other in the engaged position, and the protrusion 13y of the slider main body 13 of the rail slider 10 engages with the uneven portion 55 of the connecting plate 50. This reliably restricts the upward movement of the connecting plate 50 (in the direction of arrow c) in both the closing direction (in the direction of arrow a) and the opening direction (in the direction of arrow b).

[0112] The leg portion 65 of the changeover switch 60 has two leg portions 65a and 65b. The leg portions 65a and 65b are formed apart from each other by the same distance as the width of the protrusion 23 of the locking device 20.

[0113] The opposing inner surfaces of the leg portions 65a, 65b are formed with recesses suitable for holding the projection 23 of the locking device 20. The changeover switch 60 and the locking device 20 are attached by pressing the projection 23 of the locking device 20 between the two leg portions 65a, 65b of the leg portion 65.

[0114] [Switch] As shown in Figs. 2 and 3, a switch 70 is attached to the end of the upper rail L1 in the closing direction (the direction of the arrow a).

[0115] In practice, the switching device 70 is attached to the upper rail L1 at a position where a buffer force or a braking force from the sliding door buffer device CL attached to the rail slider 10 acts on the sliding door D. Note that the switching device 70 is attached only to the end of the upper rail L1 in the closing direction (arrow a direction), but this is not limited thereto, and the switching device 70 may be attached to the end of the upper rail L1 in the opening direction (arrow b direction).

[0116] The switching device 70 is composed of a thin plate portion 71 having a rectangular shape in a plan view, and a protrusion portion 72 having a semicylindrical cross section (hereinafter referred to as a "semicircular protrusion portion") that is overlapped and integrated with the plate portion 71.

[0117] The plate portion 71 of the switching device 70 has a width slightly shorter than the top wall portion 72a of the upper rail L1, and is attached to the upper rail L1 while being accommodated along the top wall portion 72a. The semicircular protrusion 72 is attached integrally with the plate portion 71 so as to intersect with it, and has a radius that allows it to come into contact with two sets of first and second blade portions 62 and 63 provided in the front-rear direction (the direction of the arrow ef) of the changeover switch 60.

[0118] Therefore, when the change-over switch 60 is housed in the slider main body 13 of the rail slider 10 and the sliding door D moves in the opening / closing direction (the direction of the arrow ab), either the first blade portion 62 or the second blade portion 63 of the change-over switch 60 comes into contact with the semicircular protrusion 72 of the switching device 70, causing the change-over switch 60 to rotate.

[0119] At this time, since the semicircular protrusion 72 is formed in a semicylindrical cross section, it comes into point contact with the first blade portion 62 and the second blade portion 63 of the change-over switch 60, and the running resistance of the rail slider 10 is kept to a minimum.

[0120] Next, a method for assembling the sliding door D having such a configuration will be described. First, the connecting plate main body part 51 of the connecting plate 50 is accommodated in the accommodation space 31s provided in the case main body part 31 of the case body 30 as shown in FIG.

[0121] At this time, with the position of the through hole 31h of the case main body portion 31 facing the position of the through hole 51h of the connecting plate main body portion 51, the case main body portion 31 of the case body 30 and the connecting plate main body portion 51 of the connecting plate 50 are fixed together by a fixing pin (not shown).

[0122] As a result, the connecting plate 50 is fixed to the case body 30 in a state where movement in the opening / closing direction (direction of arrow ab) and the vertical direction (direction of arrow cd) is restricted, but when the sliding door D flips up, the case body 30 and the connecting plate 50 move integrally with the sliding door D in the vertical direction (direction of arrow cd).

[0123] On the other hand, the projection 11r of the first slider portion 11 and the projection 12r of the second slider portion 12 of the slider body 13 of the rail slider 10 are inserted into the vertical direction restriction hole 51r of the connecting plate 50.

[0124] Furthermore, the two arms 22 of the locking tool 20 are placed on the step portion 11z of the first slider portion 11 and the step portion 12z of the second slider portion 12, and the stoppers 29 provided on the legs 28 of the locking tool 20 are inserted into the left-right direction restriction hole 11t of the first slider portion 11 and the left-right direction restriction hole 12t of the second slider portion 12. At this time, the upper portion of the connecting plate 50 protruding upward from the accommodation space 13s of the slider main body 13 is inserted between the two arms 22 of the locking tool 20.

[0125] Thereafter, the protrusion 23 protruding from the arm portion 22 of the locking device 20 is held so as to be sandwiched between the two leg portions 65a, 65b of the changeover switch 60, and the end of the pivot shaft 66 of the changeover switch 60 is inserted into the through hole 11h of the first slider portion 11 and the through hole 12h of the second slider portion 12.

[0126] In this state, the first slider portion 11 and the second slider portion 12 are finally assembled together to form the rail slider 10. This creates a state in which the locking device 20 and the changeover switch 60 are accommodated in the accommodation space 13s of the slider body 13 of the rail slider 10.

[0127] At this time, the rail slider 10 is free to move in the vertical direction within the range of the vertical direction restriction hole 51r of the connecting plate 50, because the protrusion 11r of the first slider portion 11 and the protrusion 12r of the second slider portion 12 are engaged with the vertical direction restriction hole 51r of the connecting plate 50. That is, as shown in FIG. 4, a state is established in which the case body 30 and the rail slider 10 are attached to each other via the connecting plate 50.

[0128] The rail slider 10 thus assembled integrally with the case body 30 and the connecting plate 50 is attached by screws with the mounting portion 14 facing a mounting target portion (not shown) of the sliding door shock absorber CL.

[0129] In this case, the sliding door shock absorber CL (FIG. 1) is attached to the rail slider 10, but the present invention is not limited to this, and a brake mechanism or stopper mechanism having a different configuration may be used instead of the sliding door shock absorber CL.

[0130] 2, the plate portion 71 of the switching device 70 is attached and fixed to a groove portion formed on the inside of the top wall portion L1a of the upper rail L1. As a result, the switching device 70 is attached in a state of being accommodated in the inner space of the upper rail L1. Here, the switching device 70 is attached to a position on the upper rail L1 where the buffering force or braking force of the sliding door buffer device CL acts on the sliding door D.

[0131] As shown in Figure 3, by inserting a pair of flange portions L1c of the upper rail L1 into the groove 11m between the first slider portion 11 and the protrusion 11p, and into the groove 12m between the second slider portion 12 and the protrusion 12p, the rail slider 10 is attached so as to be freely slidable in the opening / closing direction (the direction of arrow ab) relative to the upper rail L1.

[0132] In this case, since the rail slider 10 is attached to the upper rail L1, movement in the vertical direction (direction of arrow cd) and the front-to-back direction (direction of arrow ef) relative to the upper rail L1 is restricted, and only sliding movement in the opening / closing direction (direction of arrow ab) is permitted.

[0133] 2 shows a state in which the case body 30, the rail slider 10, the locking device 20, the connecting plate 50, and the changeover switch 60 are integrally attached, and the rail slider 10 is slidably attached to the upper rail L1. Note that the sliding door shock absorber CL is not shown in FIG.

[0134] In this manner, the rail slider 10, the locking device 20, the case body 30, the connecting plate 50, the changeover switch 60, and the locking device 70 attached to the upper rail L1 constitute a jump-up suppression mechanism 100 as a jump-up suppression device.

[0135] After that, the upper rail L1 to which the rail slider 10 is attached is fixed to the door frame, and the case body 30 is suspended from the upper rail L1. Then, the lower roller (not shown) of the sliding door D is placed on the lower rail, so that the sliding door D is attached to the door frame in a state in which it can be opened and closed.

[0136] Finally, the case body 30 is accommodated in and attached to the accommodation recesses kc formed on both side ends (corners) of the upper end side of the sliding door D, thereby being fixed together. At this time, the rail slider 10 is in a state in which it can guide the sliding door D in the opening / closing direction (the direction of the arrow ab) without bearing the weight of the sliding door D.

[0137] That is, the sliding door D integrated with the case body 30 and the connecting plate 50 is free in the vertical direction (the direction of the arrow cd) relative to the upper rail L1 and the rail slider 10, that is, the sliding door D is capable of jumping up.

[0138] This mounting method makes it easy to hang the sliding door D on the upper rail L1. As a result, the sliding door D incorporating the jump-up suppression mechanism 100 is mounted to the door frame.

[0139] In the above configuration, the operation of suppressing the sliding door D from jumping up by the jump-up suppression mechanism 100 will be described with reference to Fig. 15. Fig. 15 is a schematic diagram showing the transition of the relative positions of the changeover switch, the locking tool, and the connecting plate when the changeover switch transitions from the unlocked position to the locked position in this embodiment.

[0140] When the sliding door D is in a stationary state and not being moved in the opening / closing direction (the direction of the arrow ab), or when it has been moved in the opening / closing direction (the direction of the arrow ab) but has not passed the switching device 70, the changeover switch 60 of the jump-up suppression mechanism 100 is held in the unlocked position, as shown in Figure 15 (A).

[0141] In other words, when the changeover switch 60 is in the unlocked position, the changeover switch 60 is rotated counterclockwise, and the locking device 20 is positioned in the open direction (direction of arrow b) via the protrusion 23 held by the leg 65.

[0142] In this case, as shown in Figure 10, the connecting plate side engagement portion 54 of the connecting plate 50 and the fastener side engagement portion 27 of the fastener 20 are in a shifted positional relationship (non-engagement position) in which they do not engage with each other in the opening / closing direction (arrow ab direction).

[0143] At the same time, the first blade portion 62 of the changeover switch 60 is completely accommodated in the accommodation space 13s of the rail slider 10, while the second apex 63t of the second blade portion 63 protrudes from the accommodation space 13s.

[0144] 15(B), when the sliding door D moves in the closing direction (the direction of the arrow a), a braking force is applied by the sliding door shock absorber CL just before the sliding door D reaches the door frame. At this time, the braking force is applied to the upper end of the sliding door D, but not to the lower end of the sliding door D.

[0145] As a result, only the lower end of the sliding door D continues to move due to inertial force, causing only the upper end of the sliding door D to abut against the door frame. This causes the sliding door D to jump upward (in the direction of arrow c).

[0146] In this way, at almost the same time that the sliding door D flips up upward (in the direction of arrow c), the second apex 63t of the second blade portion 63 in the changeover switch 60 comes into contact with the semicircular protrusion 72 of the changeover device 70 on the upper rail L1, and the second blade portion 63 is pushed downward by the semicircular protrusion 72.

[0147] At this time, as shown in FIG. 15(C), the changeover switch 60 rotates clockwise, and the locking device 20 slides in the closing direction (the direction of the arrow a) via the projection 23 held by the leg portion 65.

[0148] At this time, the locking device 20 slides in the closing direction (arrow a direction) and the locking device side engaging portion 27 and the connecting plate side engaging portion 54 of the connecting plate 50 engage (engaged position), and the changeover switch 60 changes to the lock position. At this time, the upward movement of the connecting plate 50 (arrow c direction) is restricted, that is, the upward movement, i.e., the flipping up, of the sliding door D fixed integrally with the connecting plate 50 and the case body 30 is suppressed.

[0149] Thereafter, as shown in FIG. 15(D), when the sliding door D moves further in the closing direction (direction of arrow a) and the second blade portion 63 of the changeover switch 60 separates from the semicircular protrusion 72 of the changeover device 70 on the upper rail L1, the sliding door D is completely closed while the changeover switch 60 remains in the locked position.

[0150] Conversely, as shown in Figures 15(D) to 15(A), when the sliding door D moves in the opening direction (direction of arrow b) from a state in which the changeover switch 60 of the jump-up suppression mechanism 100 is held in the locked position, the first apex 62t of the first blade portion 62 of the changeover switch 60 comes into contact with the semicircular protrusion 72 of the switching device 70, and the first blade portion 62 is pushed downward.

[0151] At this time, the changeover switch 60 rotates counterclockwise, and the locking device 20 slides in the open direction (arrow b direction) via the protrusion 23 held by the leg 65. As a result, the locking device side engaging portion 27 of the locking device 20 and the connecting plate side engaging portion 54 of the connecting plate 50 are disengaged (disengaged position), and the changeover switch 60 changes to the unlocked position.

[0152] Incidentally, even if the change-over switch 60 is attached to the upper rail L1b in an irregular state in which it is in the locked position despite not being in contact with the switching device 70, as shown in FIG. 16(A), it is sufficient for the rail slider 10 to move in the closing direction (direction of arrow a) to come into contact with the semicircular protrusion 72 of the switching device 70, as shown in FIG. 16(B).

[0153] Specifically, as shown in FIG. 16(B), when the rail slider 10 moves in the closing direction (the direction of arrow a), the semicircular protrusion 72 of the switching device 70 comes into contact with the first blade portion 62, causing the switching switch 60 to rotate counterclockwise and disengaging the locking device side engagement portion 27 from the connecting plate side engagement portion 54.

[0154] If the rail slider 10 continues to move in the closing direction (direction of arrow a) thereafter, the semicircular protrusion 72 of the switching device 70 and the second blade portion 63 immediately come into contact, the switching switch 60 rotates clockwise, the locking device side engagement portion 27 and the connecting plate side engagement portion 54 engage (engaged position), and the switching switch 60 changes to the locked position.

[0155] That is, the changeover switch 60 transitions to the normal locked position. This is because the changeover switch 60 has an M-shape with a recess between the first blade portion 62 and the second blade portion 63. In this way, because the changeover switch 60 has an M-shape, even if the changeover switch 60 is in an irregular locked position or a normal unlocked position, it can always be returned to the normal locked position or unlocked position.

[0156] According to the above configuration, the jump-up suppression mechanism 100 can form an engaged state between the locking device 20 and the connecting plate 50 by utilizing only the mechanical contact between the switching device 70 fixed to the upper rail L1 and the changeover switch 60 of the rail slider 10, and therefore can effectively suppress the jump-up of the sliding door D without malfunction and without damage, even with a simpler configuration. This can prevent noise and the lower roller from coming off due to the sliding door D colliding with the upper frame, and can also prevent the sliding door shock absorber CL from being damaged.

[0157] The jump-up suppression mechanism 100 can form an engagement state between the locking device 20 and the connecting plate 50 simply by mechanical contact between the switching device 70 fixed to the upper rail L1 and the changeover switch 60 of the rail slider 10, so that it can reliably suppress the jump-up of the sliding door D regardless of the strength of the braking force provided by the sliding door buffer device CL or the traveling speed of the sliding door D.

[0158] Furthermore, the locking device side engaging portion 27 of the locking device 20 is provided with a plurality of convex portions 27c and concave portions 27d at equal intervals in the vertical direction, and the connecting plate side engaging portion 54 of the connecting plate 50 is also provided with a plurality of convex portions 54c and concave portions 54d at equal intervals in the vertical direction. Therefore, even if the relative positions of the locking device 20 and the connecting plate 50 in the vertical direction change, the locking device side engaging portion 27 and the connecting plate side engaging portion 54 can engage with each other within the vertical range in which they exist.

[0159] In other words, even if there is variation in the vertical distance between the sliding door D and the upper rail L1, the locking device side engagement portion 27 of the locking device 20 and the connecting plate side engagement portion 54 of the connecting plate 50 can be engaged to reliably prevent the sliding door D from bouncing up.

[0160] In addition, when attaching the sliding door D to the upper rail L1, the operability during attachment can be improved compared to the conventional method, without forcing a complicated operation such as mounting against the resistance of the built-in damper member as in the conventional sliding door using the built-in damper member.

[0161] 3. Other embodiments In this embodiment, the two locking device side engaging portions 27 formed on the inside of the arm portion 22 of the locking device 20 are engaged with the two connecting plate side engaging portions 54 formed on both sides of the end portion 23 of the connecting plate 50. However, the present invention is not limited to this, and the end portion 23 of the connecting plate 50 may be provided with the connecting plate side engaging portions 54 only on one side, and the locking device side engaging portions 27 may be provided on the inside of one of the arm portions 22 of the locking device 20, and the connecting plate side engaging portions 54 and the locking device side engaging portions 27 may be engaged with each other only on one side, thereby suppressing the flipping up of the sliding door D.

[0162] In addition, in this embodiment, the case has been described in which the switching device 70 is attached to the upper rail L1, but the present invention is not limited to this, and the switching device 70 may be formed integrally with the upper rail L1 in advance, or a semicircular protrusion 72 may be formed integrally with the top wall portion L1a of the upper rail L1.

[0163] Furthermore, in this embodiment, the case where the switching device 70 is attached to the position of the upper rail L1 where the braking force of the shock absorber device for sliding door CL acts has been described, but the present invention is not limited to this, and the switching device 70 may be integrally formed at a position of the upper rail L1 slightly before the braking force of the shock absorber device for sliding door CL acts. In this case, it is possible to reliably prevent the sliding door D from jumping up.

[0164] Furthermore, in this embodiment, the sliding door shock absorber CL is attached to the rail slider 10, but the present invention is not limited to this, and the sliding door shock absorber CL may be attached to the upper rail L1.

[0165] Furthermore, in this embodiment, a case has been described in which a connecting plate 50 made of a plate-shaped member is used as the connecting part, but the present invention is not limited to this, and a connecting part made of a shaft-shaped member such as a cylinder or a rectangular prism may also be used.

[0166] In addition, a person skilled in the art can appropriately modify the jump-up suppression mechanism 100 of the present invention in accordance with conventionally known knowledge. As long as the configuration of the present invention is still provided even after such modifications, it is of course included in the scope of the present invention. [Explanation of symbols]

[0167] 10...rail slider, 13...slider body, 13s...accommodation space, 11...first slider portion, 11p...projection, 12...second slider portion, 12p...projection, 11e, 12e...side wall portion, 11q, 12q...expansion portion, 11z, 12z...step portion, 11u, 12u...recess, 11r, 12r, 11v, 12v, 13x...projection, 11t, 12t...left-right direction regulation hole, 11w...standing wall portion, 14...mounting portion, 20...locking device, 21...locking device body portion, 22...arm portion, 23...projection portion, 24, 29...stopper, 27...locking device side engagement portion, 28...leg portion, 30...case body, 31...case body portion, 31s ......Storage space, 31h...through hole, 33...front panel portion, 50...connecting plate (connecting portion), 51...connecting plate main body portion, 51h...through hole, 51r...vertical direction regulating hole, 52...stopper plate, 52m...groove portion, 53...end portion, 54...connecting plate side engagement portion (connecting portion side engagement portion), 54c...convex portion, 54d...concave portion, 60...changeover switch, 61...shaft holding portion, 62...first blade portion, 62t...first top portion, 63...second blade portion, 63t...second top portion, 65...leg portion, 66...rotating shaft, 70...switching device, 71...plate portion, 72...semicircular protrusion, 100...jump-up suppression mechanism, CL...sliding door buffer device, D...sliding door, L1...upper rail.

Claims

1. A jump suppression device that is attached to a lower rail provided on the lower frame of a sliding door frame or to a sliding door with a lower frame load that runs along the opening and closing direction on the floor surface of the lower frame, A rail slider that slides along the upper rail; A case body fixed to an upper end of the sliding door that opens and closes along the upper rail; a connecting portion which is a member attached to the case body, which is accommodated in an accommodation space provided in the rail slider so as to be movable in the up and down direction, and which has a connecting portion side engagement portion provided on a horizontal surface perpendicular to the opening and closing direction; a changeover switch that is rotatably attached while being accommodated in the rail slider, and that rotates by contacting with a changeover tool of the upper rail when the rail slider moves, and that can be switched between an unlocked position and a locked position; a locking device attached to the rail slider in a state in which it can be moved to a non-engaged position or an engaged position by sliding in response to rotation of the changeover switch, and having a locking device side engaging portion that engages with the connecting portion side engaging portion when the locking device slides to the engaged position; A jump suppression device comprising:

2. The connecting portion is a plate-shaped member. The jump restraint device according to claim 1.

3. The changeover switch has an M-shape in a plan view, and is made up of a first blade portion having a mountain shape and a second blade portion having a mountain shape, and a first apex of the first blade portion or a second apex of the second blade portion is in contact with the changeover tool. The jump-up suppression device according to claim 1 or 2.

4. The locking tool has a U-shape in a plan view, and the locking tool side engagement portions are provided on the inner surfaces of the opposing arms, The connecting portion is provided with the connecting portion side engaging portion engageable with the fastener side engaging portion on one surface in a horizontal direction perpendicular to the opening / closing direction and on the other surface opposite to the one surface. A jump-up suppression device according to any one of claims 1 to 3.

5. Either the first blade portion or the second blade portion of the changeover switch protrudes upward from the rail slider and comes into contact with the changeover tool when the rail slider travels. The jump suppression device according to claim 3.

6. The switching device is attached to the upper rail at a position where the shock absorbing force or braking force of the sliding door shock absorbing device acts. A jump-up suppression device according to any one of claims 1 to 5.

7. A sliding door having a jump suppression device attached to a lower rail provided on a lower frame of a sliding door frame or to a sliding door with a lower frame load that travels along the opening and closing direction on the floor surface of the lower frame, The jump suppression device is A rail slider that slides along the upper rail; A case body fixed to an upper end of the sliding door that opens and closes along the upper rail; a connecting portion which is a member attached to the case body, which is accommodated in an accommodation space provided in the rail slider so as to be movable in the up and down direction, and which has a connecting portion side engagement portion provided on a horizontal surface perpendicular to the opening and closing direction; a changeover switch that is rotatably attached while being accommodated in the rail slider, and that rotates by contacting with a changeover tool of the upper rail when the rail slider moves, and that can be switched between an unlocked position and a locked position; a locking device attached to the rail slider in a state in which it can be moved to a non-engaged position or an engaged position by sliding in response to rotation of the changeover switch, and having a locking device side engaging portion that engages with the connecting portion side engaging portion when the locking device slides to the engaged position; Equipped with a sliding door.

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